The power consumption of QSFP (Quad Small Form-Factor Pluggable) transceivers can vary depending on the specific type of module, the data rate it supports, and additional features or functionalities. QSFP transceivers are used for high-speed data transmission in data centers and telecommunications networks. As of my last knowledge update in January 2022, here are general considerations for power consumption:

1. QSFP28 (100G):

• QSFP28 modules, which support data rates up to 100 gigabits per second (Gbps), typically have a power consumption range of approximately 3.5 watts to 4.5 watts. However, the actual power consumption can vary among different manufacturers and specific module types.

2. QSFP56 (200G and 400G):

• QSFP56 modules, designed for higher data rates of 200 Gbps and 400 Gbps, may have higher power consumption compared to QSFP28. The power consumption can range from around 6 watts to 12 watts or more, depending on the specific module and the technology used.

It's important to note that power consumption figures can vary based on factors such as the type of optics (SR, LR, ER, etc.), modulation schemes, and other features like forward error correction (FEC). Additionally, advancements in technology may lead to improvements in power efficiency.

For accurate and up-to-date information on the power consumption of a specific QSFP transceiver module, it is recommended to refer to the datasheet or technical specifications provided by the transceiver's manufacturer. Manufacturers typically provide detailed information on power requirements under different operating conditions.